<template>
  <div class="tabs">
    <el-tag 
        v-for="(item,index) in tags" 
        :key="item.path" 
        :closable="item.name !== 'home'"
        :effect="$route.name === item.name ? 'dark' : 'plain'"
        @click="changeMenu(item)"
        @close="handleClose(item,index)"
        size="small"
        >
        {{ item.label }}
    </el-tag>
  </div>
</template>

<script>
import { mapState,mapMutations } from 'vuex';
export default {
    name: 'CommonTags',
    data () {
        return {
            
        }
    },
    computed: {
        ...mapState({
            tags: state => state.tab.tabsList
        })
    },
    methods: {
        ...mapMutations(['closeTag']),
        //点击tag实现跳转功能
        changeMenu(item){
            // console.log(item)
            this.$router.push({path:item.path})
        },

        //点击tag实现删除功能
        handleClose(item,index){
            // this.$store.commit('closeTag')
            //调用store中的mutation
            this.closeTag(item)
            const length =  this.tags.length
            //删除之后的跳转逻辑
            if(item.name !== this.$route.name){
                return
            }
            //表示删除的最后一项
            if(index === length){
                this.$router.push({
                    name: this.tags[index-1].name
                })
            }else{
                this.$router.push({
                    name: this.tags[index].name
                })
            }
        }
    }
}
</script>
<style lang="less" scoped>
.tabs{
    padding: 20px;
    .el-tag {
        margin-right: 15px;
        cursor: pointer;
    }
}
</style>